This photo was printed on the cover of the NY Times, and Boyd feared the consequences when the President saw him out of uniform. Allaying his fears of being out of a job, US Defense Secretary Robert Gates has commented on the incident;
"Any soldier who goes into battle against the Taliban in pink boxers and flip-flops has a special kind of courage.
"I can only wonder about the impact on the Taliban. Just imagine seeing that: a guy in pink boxers and flip-flops has you in his cross-hairs. What an incredible innovation in psychological warfare."
I suppose they are pretty strict when it comes to dress code in the US military... I've only seen one American military guy out of his jeans and he didn't wear underwear at all, so it's good to finally have confirmation they're at least allowed to wear their own lucky boxers!